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Exploring the Applicability of Quantitative Models Based on NIR Reflectance Spectroscopy of Plant SamplesThe establishment of quantitative models based on the near-infrared (NIR) spectroscopic analysis of plant samples plays an important role in improving both the scope of the models and the accuracy of prediction. This technique could provide a new method for tobacco quality management and provide a new discriminant method for other agricultural products.
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Calibration Transfer Chemometrics, Part II: A Review of the SubjectCalibration transfer involves several strategies and mathematical techniques for applying a single calibration database consisting of samples, reference data, and calibration equations to two or more instruments. In this installment, we review the chemometric and tactical strategies used for the calibration transfer process.
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Using Information-Based Classifications to Distinguish Characteristics of Raw Agricultural Materials by Near-Infrared SpectroscopyTraditional qualitative analysis of agricultural materials using near-infrared spectroscopy can be improved using information-based classification methods, such as projection based on principal components and the Fisher criterion (PPF).
Latest:
Exploring the Applicability of Quantitative Models Based on NIR Reflectance Spectroscopy of Plant SamplesThe establishment of quantitative models based on the near-infrared (NIR) spectroscopic analysis of plant samples plays an important role in improving both the scope of the models and the accuracy of prediction. This technique could provide a new method for tobacco quality management and provide a new discriminant method for other agricultural products.
Latest:
Exploring the Applicability of Quantitative Models Based on NIR Reflectance Spectroscopy of Plant SamplesThe establishment of quantitative models based on the near-infrared (NIR) spectroscopic analysis of plant samples plays an important role in improving both the scope of the models and the accuracy of prediction. This technique could provide a new method for tobacco quality management and provide a new discriminant method for other agricultural products.
Latest:
Single-Cell ICP-MS Analysis: Quantifying the Metal Concentration of Unicellular Organisms at the Cellular LevelSingle-cell ICP-MS can accurately quantify the metal concentrations within individual cells, providing new information about the mean metal content and the variation within a cell population. This method is shown to be a vital tool for assessing the specific uptake of metals by ovarian cancer cells and fresh water algae.
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Single-Cell ICP-MS Analysis: Quantifying the Metal Concentration of Unicellular Organisms at the Cellular LevelSingle-cell ICP-MS can accurately quantify the metal concentrations within individual cells, providing new information about the mean metal content and the variation within a cell population. This method is shown to be a vital tool for assessing the specific uptake of metals by ovarian cancer cells and fresh water algae.
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Analysis of Organometallic Compounds and Metallic Particles in Specialty Gases by Direct Injection Using Gas Exchange Device (GED) Coupled to Inductively Coupled Plasma–Mass Spectrometry (ICP-MS)In this article, we introduce the concept of a gas exchange device (GED) and how it can be used to monitor organometallic compounds and metallic particles in specialty gases.
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Solid Physical State Transformation in Hot Melt Extrusion Revealed by Inline Near-Infrared (NIR) Spectroscopy and Offline Terahertz (THz) Raman ImagingInline FT-NIR and offline terahertz Raman imaging analysis are used to characterize active pharmaceutical ingredient (API) crystallinity and to monitor different solid physical states of the API, to control process parameters of hot melt extrusion.
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Exploring the Unknown with Correlative Raman Imaging and Scanning Electron MicroscopyConfocal Raman imaging and scanning electron microscopy are techniques that are ideally suited to correlating structural and chemical information as shown here on a variety of samples.
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Data-Driven Raman Spectroscopy in Oil and Gas: Rapid Online Analysis of Complex Gas MixturesThis new data-driven Raman spectroscopy (DDRS) method is capable of simultaneously measuring 12 hydrocarbon and nonhydrocarbon gases in the presence of matrix interferences.
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Exploring the Unknown with Correlative Raman Imaging and Scanning Electron MicroscopyConfocal Raman imaging and scanning electron microscopy are techniques that are ideally suited to correlating structural and chemical information as shown here on a variety of samples.
Latest:
Exploring the Unknown with Correlative Raman Imaging and Scanning Electron MicroscopyConfocal Raman imaging and scanning electron microscopy are techniques that are ideally suited to correlating structural and chemical information as shown here on a variety of samples.
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Lithium-Ion Battery Analysis: A Virtual SymposiumWebinar Date/Time: Thursday, September 26, 2024 Morning Session: 10:00 AM EDT | 7:00 AM PDT | 3:00 PM BST | 4:00 PM CEST Afternoon Sesson: 12:30 PM EDT | 9:30 AM PDT | 5:30 PM BST | 6:30 PM CEST
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Evaluation of Modified QuEChERS for Pesticide Analysis in CannabisWell-established techniques used by the food safety industry, such as QuEChERS sample preparation followed by LC–MS/MS for the analysis of multiresidue pesticides, are evaluated for use with cannabis plant material.We evaluated a modified QuEChERS LC-MS/MS method for analysis of multiresidue pesticides.
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Target Anode Material for HHXRF InstrumentsThis application note provides insights for the proper selection of anode materials and thicknesses for HHXRF applications.
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Native Measurement of a Biotherapeutic without Interference from Excipients Using Microfluidic Modulation SpectroscopyA new infrared spectroscopy technique, microfluidic modulation spectroscopy (MMS), delivers reproducible protein characterization over close to four orders of magnitude in protein concentration (from 0.1 to 200 mg/mL). This technique characterizes samples from the earliest stages of development through to manufacture.
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Direct Determination of Oil Content in Binary Mixtures of Peanut and Canola Oils Using Partial Least Squares and Attenuated Total Reflectance Fourier Transform Infrared SpectroscopyThis study presents a novel, time-efficient, and cost-effective procedure for determining the percentage of oil content in binary mixtures of peanut and canola oils.
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Direct Determination of Oil Content in Binary Mixtures of Peanut and Canola Oils Using Partial Least Squares and Attenuated Total Reflectance Fourier Transform Infrared SpectroscopyThis study presents a novel, time-efficient, and cost-effective procedure for determining the percentage of oil content in binary mixtures of peanut and canola oils.
Latest:
Direct Determination of Oil Content in Binary Mixtures of Peanut and Canola Oils Using Partial Least Squares and Attenuated Total Reflectance Fourier Transform Infrared SpectroscopyThis study presents a novel, time-efficient, and cost-effective procedure for determining the percentage of oil content in binary mixtures of peanut and canola oils.
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Enhanced Protein Structural Characterization Using Microfluidic Modulation SpectroscopyThis article introduces a new infrared (IR) technique, microfluidic modulation spectroscopy (MMS), that is designed to address these needs, and presents data from measurements of commercially available proteins. The data demonstrate significant increases in sensitivity, dynamic range, and utility for the determination of protein similarity (fingerprinting), quantitation, protein secondary structure, and protein stability and aggregation through thermal and chemical denaturation methods.
Latest:
Enhanced Protein Structural Characterization Using Microfluidic Modulation SpectroscopyThis article introduces a new infrared (IR) technique, microfluidic modulation spectroscopy (MMS), that is designed to address these needs, and presents data from measurements of commercially available proteins. The data demonstrate significant increases in sensitivity, dynamic range, and utility for the determination of protein similarity (fingerprinting), quantitation, protein secondary structure, and protein stability and aggregation through thermal and chemical denaturation methods.
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Fast Quality Evaluation of Bulk Polymers and Products Using FT-NIR SpectroscopyFT-NIR spectroscopy for the quantitative determination of key physical parameters in bulk polymers and products, including density and melt index (MI). These measurements can often be made with little or no sample preparation.
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Improving Fluorescence and Raman Techniques for Environmental Microplastic AnalysisA recent study conducted at the LaserLaB Amsterdam and Vrije Universiteit Amsterdam (the Netherlands) explored spectroscopic imaging techniques, including Raman and fluorescence microscopy, for characterizing microplastics (MPs), focusing on optimizing sample preparation, particularly density separation, and Nile Red staining.Spectroscopy spoke to Merel Konings, corresponding author of the paper resulting from the study, about her work
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DNA Adductomic Analysis by Data-Independent Mass SpectrometryA new type of analysis called “wide-selected ion monitoring (SIM)/MS2” scanning, is capable of screening for a wide range of DNA adducts (chemical modifications to genomic DNA). This method has successfully identified DNA adducts from carcinogen exposures and oxidative stress in human prostate and kidney tissues.
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DNA Adductomic Analysis by Data-Independent Mass SpectrometryA new type of analysis called “wide-selected ion monitoring (SIM)/MS2” scanning, is capable of screening for a wide range of DNA adducts (chemical modifications to genomic DNA). This method has successfully identified DNA adducts from carcinogen exposures and oxidative stress in human prostate and kidney tissues.
Latest:
DNA Adductomic Analysis by Data-Independent Mass SpectrometryA new type of analysis called “wide-selected ion monitoring (SIM)/MS2” scanning, is capable of screening for a wide range of DNA adducts (chemical modifications to genomic DNA). This method has successfully identified DNA adducts from carcinogen exposures and oxidative stress in human prostate and kidney tissues.
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Targeted Metabolomics Analysis of Type 2 Diabetes Serum Samples Using Mass Spectrometry and a Standardized Quantitative MethodAn important advantage of standardized methods is that they enable comparability between laboratories and across studies. In this work, the author used a standardized targeted kit to demonstrate the accuracy, sensitivity, and reproducibility of the approach, analyzing serum samples obtained from type 2 diabetes study subjects and healthy controls.
